Won't happen. This dev team doesn't want players testing stuff because they want content to be a surprise. Quite a few things which has happened to classes or concepts (diadem/LoV/AST) could have been somewhat avoided if there was some form of PTS early on. Testing a MMO internally majority of the time just leads to more issues with balance. I would love a test server so players can give feedback on those jobs so they are actually viable when the full game releases and not a mess like MCH and AST. I mean they spent the whole of Heavenward balancing AST...